Salt-pan



(N9 Model.)

N. HEWLETT.

SAL'T PAN. v No. 265,806. I Patented Oct. 10, 1882'..

29 $6,, me a/r 0.

UNITED STATES PATENT OFFICE.

HENRY N. HEWLETT, or OSOODA, MICHIGAN.

SALT-PAN.

SPECIFICATION forming part of Letters Patent No. 265,806, dated October16,1882.

Application filed June 16, 1882.

T 0 all whom/it may concern:

Be it known that I, HENRY N. HEWLETT, of Oscoda, in the county of Ioscoand State of Michigan, haveinvented a new and useful Improvement inSalt-Pans, of which the following is a specification.

Figure l is a vertical section through on end of the pan. Fig. 2 is avertical longitudinal section. Figs. 3 and 4 are end views of thesteam-pipes used for heating the brine.

My invention consists in creating a current in a channel at the bottomof a salt-pan, by which the salt crystals are forced into a place whencethey can be easily removed.

A represents a frame supporting'a salt-pan.

B B represent a salt-pan, made preferably of galvanized iron, havinginclined sides B and anarrow channel, B, at the bottom.

0 is a steam-pipe to admit steam into the header D.

1) D D are headers at one end of the saltpan, and are connected by thesteam-pipes E, E, and E with corresponding headers, K, K, and K near theother end of the salt-pan. The connectionsbetween the headers are asfollows: I) to D, K to K and K F is a pipe connecting with the two pipesG G These latter pipes run lengthwise of the salt-pan, preferably justbelow pipes E and are perforated withsmall holes, (-hown in G andarranged to throw jets of air alternately on opposite sides of saidpipes. The ends of said pipes are closed.

His a pipe running lengthwise of the saltpan, near the bottom thereof,and provided with curved or oblique jets S, so placed that when a streamof water or brineis forced into said pipe it willissuethrough jets S andcreate a current on the bottom of the salt-pan, by which the saltcrystals will be carried along and deposited in asunken receptacle, L,in the bottom of the pan. Pipe H is connected with the delivery-pipe ofa force-pump placed in any convenient place, and I prefer to have thesuction-pipe of said pump led into the salt-pan, so that the brine inthe pan will not be weakened by forcing in new. brine or fresh water.

(No model.)

N is a belt running over a pulley, M, and a similar pulley not shown)abovethe pan. 0 O are buckets carried on belt N.

P is a draining-board, and R a drip-board.

The operation of my invention is as follows;

The salt-pan being filled with brine, steam is admitted through pipe 0and the brine begins to evaporate. Air, preferablyina heated state, isforced through pipe F and escapes in jets into the brine through theperforations in pipes G G. This promotes evaporation and preventscoating. As the salt crystals form they slide down the inclined sides Bof the salt-pan and are collected in the channel 13. A stream of brineor water is now forced into pipe H and issues through jets S, thuscreating a current in channel 13, which carries the salt crystalstherein collected along until they fall into the sunken receptacle orpocket L. Buckets O on belt N take up the salt from pocket L and depositit on draining-board P, where it is drained and shoveled off intobarrels. The drip from the salt on board 1 is caught on board R andreturned to the pan.

What I claim as my invention, and desire to secure by Letters Patent, is

1. lhe combination of the salt-pan, having inclined sides B and channel15, with pipe H, having therein jets S, and pocket L, as and for thepurposes set forth.

2. The combination of the salt-pan, having therein the pocket L, withbelt N, carrying buckets 0, and operated by suitable mechan ism.

3. A salt-pan having inclined sides, a narrow channel along its bottom,with a pocket therein adapted to collect the salt crystals and deliverthem to an elevator, and suitable mechanism for forcing a current ofbrine through said channel and toward said pocket, substantially asherein shown and described.

HY. N. HEWLETT.

Witnesses:

SANDS F. MoonE, D. BETHUNE DUFFIELD.

